/*
 * Copyright (c) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.huawei.codelab.utils;

import java.security.SecureRandom;

/**
 * CommonUtil
 *
 * @since 2021-01-11
 */
public class CommonUtil {
    /**
     * getRandomInt
     *
     * @param num Random [0-num)
     * @return int Random [0-num)
     */
    public static int getRandomInt(int num) {
        int randomInt = 0;
        if (num > 0) {
            SecureRandom random = new SecureRandom();
            randomInt = random.nextInt(num);
        }
        return randomInt;
    }
}
